Climate averages 1991–2020

Castries weather
in July.

A hot, moderately wet month: the 5th warmest and the 8th driest of the year.

Long-term climate patterns, not a forecast for a particular trip.

Average high 28.7°C Daytime mean, July

Average low 24.8°C Night-time mean, July

Rainfall 83 mm 20 days with ≥1 mm

Daylight 13 h Sunrise to sunset, per day

July is a hot month in Castries: daytime highs average 28.7°C and nights cool to about 24.8°C. By daytime temperature it is the 5th warmest of the 12 months.

Expect about 83 mm of rain on roughly 20 days, which makes July a moderately wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 52 min on an average July day.

The nearest other city in this atlas is Fort-de-France (68 km away). In July its highs average 28.7°C, about as warm as Castries, with 113 mm of rain.

From July to August, average highs rise by 0.2°C to 28.9°C, and monthly rainfall rises from 83 mm to 99 mm.

The annual picture

July in context

30-year average

Average highAverage low°C

Monthly rainfall

Average total · mm

Averages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated

Every month, side by side

Castries climate table

1991–2020

Monthly climate averages for Castries, 1991–2020
Month	Average highHigh / low	Average low	Rainfall mm/month	Rain days ≥1 mm/day	Daylight hours/dayDaylight h/day
January	26.9°C23.4°C	23.4°C	31	11.8	11.411 h
February	27.3°C23.3°C	23.3°C	21	8.9	11.712 h
March	27.7°C23.5°C	23.5°C	26	9.8	12.012 h
April	28.4°C24.0°C	24.0°C	36	11.5	12.412 h
May	29.0°C24.8°C	24.8°C	47	12.5	12.813 h
June	28.8°C25.0°C	25.0°C	65	15.1	12.913 h
July, selected	28.7°C24.8°C	24.8°C	83	20.3	12.913 h
August	28.9°C25.0°C	25.0°C	99	20.7	12.613 h
September	29.1°C25.2°C	25.2°C	104	19.4	12.212 h
October	28.6°C24.9°C	24.9°C	119	20.9	11.812 h
November	27.8°C24.5°C	24.5°C	102	18.8	11.511 h
December	27.3°C24.0°C	24.0°C	42	13.0	11.311 h

Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.

Compare places

July in nearby cities

Distance from Castries

Read the numbers correctly

Climate, not a promise.

These patterns help compare months. They cannot tell you the weather on a specific day of your trip.

Sources, method and limits

How these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Castries) is explained once on the Castries year overview and on the Sources, method and limits page.